1 /* 2 * This file is part of FFmpeg. 3 * 4 * FFmpeg is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU Lesser General Public 6 * License as published by the Free Software Foundation; either 7 * version 2.1 of the License, or (at your option) any later version. 8 * 9 * FFmpeg is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 * Lesser General Public License for more details. 13 * 14 * You should have received a copy of the GNU Lesser General Public 15 * License along with FFmpeg; if not, write to the Free Software 16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 17 */ 18 19 #ifndef AVCODEC_PACKET_INTERNAL_H 20 #define AVCODEC_PACKET_INTERNAL_H 21 22 #include <stdint.h> 23 24 #include "packet.h" 25 26 typedef struct PacketList { 27 AVPacket pkt; 28 struct PacketList *next; 29 } PacketList; 30 31 /** 32 * Append an AVPacket to the list. 33 * 34 * @param head List head element 35 * @param tail List tail element 36 * @param pkt The packet being appended. The data described in it will 37 * be made reference counted if it isn't already. 38 * @param copy A callback to copy the contents of the packet to the list. 39 May be null, in which case the packet's reference will be 40 moved to the list. 41 * @return 0 on success, negative AVERROR value on failure. On failure, 42 the packet and the list are unchanged. 43 */ 44 int avpriv_packet_list_put(PacketList **head, PacketList **tail, 45 AVPacket *pkt, 46 int (*copy)(AVPacket *dst, const AVPacket *src), 47 int flags); 48 49 /** 50 * Remove the oldest AVPacket in the list and return it. 51 * 52 * @note The pkt will be overwritten completely on success. The caller 53 * owns the packet and must unref it by itself. 54 * 55 * @param head List head element 56 * @param tail List tail element 57 * @param pkt Pointer to an AVPacket struct 58 * @return 0 on success, and a packet is returned. AVERROR(EAGAIN) if 59 * the list was empty. 60 */ 61 int avpriv_packet_list_get(PacketList **head, PacketList **tail, 62 AVPacket *pkt); 63 64 /** 65 * Wipe the list and unref all the packets in it. 66 * 67 * @param head List head element 68 * @param tail List tail element 69 */ 70 void avpriv_packet_list_free(PacketList **head, PacketList **tail); 71 72 int ff_side_data_set_encoder_stats(AVPacket *pkt, int quality, int64_t *error, int error_count, int pict_type); 73 74 int ff_side_data_set_prft(AVPacket *pkt, int64_t timestamp); 75 76 #endif // AVCODEC_PACKET_INTERNAL_H 77